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security/ cleanups

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This patch contains the following cleanups that are now possible:
- remove the unused security_operations->inode_xattr_getsuffix
- remove the no longer used security_operations->unregister_security
- remove some no longer required exit code
- remove a bunch of no longer used exports

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: James Morris <jmorris@namei.org>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Adrian Bunk 2007-10-16 23:31:38 -07:00 committed by Linus Torvalds
parent b53767719b
commit cbfee34520
11 changed files with 1 additions and 143 deletions
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1
drivers/usb/core/usb.c
View file

@ -982,7 +982,6 @@ EXPORT_SYMBOL(usb_altnum_to_altsetting);
EXPORT_SYMBOL(__usb_get_extra_descriptor);
EXPORT_SYMBOL(usb_find_device);
EXPORT_SYMBOL(usb_get_current_frame_number);
EXPORT_SYMBOL(usb_buffer_alloc);

2
fs/exec.c
View file

@ -64,7 +64,6 @@ int core_uses_pid;
char core_pattern[CORENAME_MAX_SIZE] = "core";
int suid_dumpable = 0;
EXPORT_SYMBOL(suid_dumpable);
/* The maximal length of core_pattern is also specified in sysctl.c */
static LIST_HEAD(formats);
@ -1662,7 +1661,6 @@ void set_dumpable(struct mm_struct *mm, int value)
break;
}
}
EXPORT_SYMBOL_GPL(set_dumpable);
int get_dumpable(struct mm_struct *mm)
{

15
include/linux/security.h
View file

@ -1158,10 +1158,6 @@ struct request_sock;
* allow module stacking.
* @name contains the name of the security module being stacked.
* @ops contains a pointer to the struct security_operations of the module to stack.
* @unregister_security:
* remove a stacked module.
* @name contains the name of the security module being unstacked.
* @ops contains a pointer to the struct security_operations of the module to unstack.
*
* @secid_to_secctx:
* Convert secid to security context.
@ -1259,7 +1255,6 @@ struct security_operations {
int (*inode_removexattr) (struct dentry *dentry, char *name);
int (*inode_need_killpriv) (struct dentry *dentry);
int (*inode_killpriv) (struct dentry *dentry);
const char *(*inode_xattr_getsuffix) (void);
int (*inode_getsecurity)(const struct inode *inode, const char *name, void *buffer, size_t size, int err);
int (*inode_setsecurity)(struct inode *inode, const char *name, const void *value, size_t size, int flags);
int (*inode_listsecurity)(struct inode *inode, char *buffer, size_t buffer_size);
@ -1350,8 +1345,6 @@ struct security_operations {
/* allow module stacking */
int (*register_security) (const char *name,
struct security_operations *ops);
int (*unregister_security) (const char *name,
struct security_operations *ops);
void (*d_instantiate) (struct dentry *dentry, struct inode *inode);
@ -1432,9 +1425,7 @@ struct security_operations {
/* prototypes */
extern int security_init (void);
extern int register_security (struct security_operations *ops);
extern int unregister_security (struct security_operations *ops);
extern int mod_reg_security (const char *name, struct security_operations *ops);
extern int mod_unreg_security (const char *name, struct security_operations *ops);
extern struct dentry *securityfs_create_file(const char *name, mode_t mode,
struct dentry *parent, void *data,
const struct file_operations *fops);
@ -1518,7 +1509,6 @@ int security_inode_listxattr(struct dentry *dentry);
int security_inode_removexattr(struct dentry *dentry, char *name);
int security_inode_need_killpriv(struct dentry *dentry);
int security_inode_killpriv(struct dentry *dentry);
const char *security_inode_xattr_getsuffix(void);
int security_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err);
int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
@ -1923,11 +1913,6 @@ static inline int security_inode_killpriv(struct dentry *dentry)
return cap_inode_killpriv(dentry);
}
static inline const char *security_inode_xattr_getsuffix (void)
{
return NULL ;
}
static inline int security_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err)
{
return -EOPNOTSUPP;

4
kernel/capability.c
View file

@ -17,9 +17,6 @@
unsigned securebits = SECUREBITS_DEFAULT; /* systemwide security settings */
kernel_cap_t cap_bset = CAP_INIT_EFF_SET;
EXPORT_SYMBOL(securebits);
EXPORT_SYMBOL(cap_bset);
/*
* This lock protects task->cap_* for all tasks including current.
* Locking rule: acquire this prior to tasklist_lock.
@ -244,7 +241,6 @@ int __capable(struct task_struct *t, int cap)
}
return 0;
}
EXPORT_SYMBOL(__capable);
int capable(int cap)
{

2
mm/mmap.c
View file

@ -181,8 +181,6 @@ error:
return -ENOMEM;
}
EXPORT_SYMBOL(__vm_enough_memory);
/*
* Requires inode->i_mapping->i_mmap_lock
*/

1
mm/nommu.c
View file

@ -44,7 +44,6 @@ int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT;
int heap_stack_gap = 0;
EXPORT_SYMBOL(mem_map);
EXPORT_SYMBOL(__vm_enough_memory);
EXPORT_SYMBOL(num_physpages);
/* list of shareable VMAs */

21
security/commoncap.c
View file

@ -30,8 +30,6 @@ int cap_netlink_send(struct sock *sk, struct sk_buff *skb)
return 0;
}
EXPORT_SYMBOL(cap_netlink_send);
int cap_netlink_recv(struct sk_buff *skb, int cap)
{
if (!cap_raised(NETLINK_CB(skb).eff_cap, cap))
@ -532,22 +530,3 @@ int cap_vm_enough_memory(struct mm_struct *mm, long pages)
return __vm_enough_memory(mm, pages, cap_sys_admin);
}
EXPORT_SYMBOL(cap_capable);
EXPORT_SYMBOL(cap_settime);
EXPORT_SYMBOL(cap_ptrace);
EXPORT_SYMBOL(cap_capget);
EXPORT_SYMBOL(cap_capset_check);
EXPORT_SYMBOL(cap_capset_set);
EXPORT_SYMBOL(cap_bprm_set_security);
EXPORT_SYMBOL(cap_bprm_apply_creds);
EXPORT_SYMBOL(cap_bprm_secureexec);
EXPORT_SYMBOL(cap_inode_setxattr);
EXPORT_SYMBOL(cap_inode_removexattr);
EXPORT_SYMBOL(cap_task_post_setuid);
EXPORT_SYMBOL(cap_task_kill);
EXPORT_SYMBOL(cap_task_setscheduler);
EXPORT_SYMBOL(cap_task_setioprio);
EXPORT_SYMBOL(cap_task_setnice);
EXPORT_SYMBOL(cap_task_reparent_to_init);
EXPORT_SYMBOL(cap_syslog);
EXPORT_SYMBOL(cap_vm_enough_memory);

12
security/dummy.c
View file

@ -401,11 +401,6 @@ static int dummy_inode_listsecurity(struct inode *inode, char *buffer, size_t bu
return 0;
}
static const char *dummy_inode_xattr_getsuffix(void)
{
return NULL;
}
static int dummy_file_permission (struct file *file, int mask)
{
return 0;
@ -915,11 +910,6 @@ static int dummy_register_security (const char *name, struct security_operations
return -EINVAL;
}
static int dummy_unregister_security (const char *name, struct security_operations *ops)
{
return -EINVAL;
}
static void dummy_d_instantiate (struct dentry *dentry, struct inode *inode)
{
return;
@ -1034,7 +1024,6 @@ void security_fixup_ops (struct security_operations *ops)
set_to_dummy_if_null(ops, inode_removexattr);
set_to_dummy_if_null(ops, inode_need_killpriv);
set_to_dummy_if_null(ops, inode_killpriv);
set_to_dummy_if_null(ops, inode_xattr_getsuffix);
set_to_dummy_if_null(ops, inode_getsecurity);
set_to_dummy_if_null(ops, inode_setsecurity);
set_to_dummy_if_null(ops, inode_listsecurity);
@ -1095,7 +1084,6 @@ void security_fixup_ops (struct security_operations *ops)
set_to_dummy_if_null(ops, netlink_send);
set_to_dummy_if_null(ops, netlink_recv);
set_to_dummy_if_null(ops, register_security);
set_to_dummy_if_null(ops, unregister_security);
set_to_dummy_if_null(ops, d_instantiate);
set_to_dummy_if_null(ops, getprocattr);
set_to_dummy_if_null(ops, setprocattr);

8
security/inode.c
View file

@ -332,14 +332,6 @@ static int __init securityfs_init(void)
return retval;
}
static void __exit securityfs_exit(void)
{
simple_release_fs(&mount, &mount_count);
unregister_filesystem(&fs_type);
subsystem_unregister(&security_subsys);
}
core_initcall(securityfs_init);
module_exit(securityfs_exit);
MODULE_LICENSE("GPL");

58
security/security.c
View file

@ -71,8 +71,7 @@ int __init security_init(void)
*
* This function is to allow a security module to register itself with the
* kernel security subsystem. Some rudimentary checking is done on the @ops
* value passed to this function. A call to unregister_security() should be
* done to remove this security_options structure from the kernel.
* value passed to this function.
*
* If there is already a security module registered with the kernel,
* an error will be returned. Otherwise 0 is returned on success.
@ -93,31 +92,6 @@ int register_security(struct security_operations *ops)
return 0;
}
/**
* unregister_security - unregisters a security framework with the kernel
* @ops: a pointer to the struct security_options that is to be registered
*
* This function removes a struct security_operations variable that had
* previously been registered with a successful call to register_security().
*
* If @ops does not match the valued previously passed to register_security()
* an error is returned. Otherwise the default security options is set to the
* the dummy_security_ops structure, and 0 is returned.
*/
int unregister_security(struct security_operations *ops)
{
if (ops != security_ops) {
printk(KERN_INFO "%s: trying to unregister "
"a security_opts structure that is not "
"registered, failing.\n", __FUNCTION__);
return -EINVAL;
}
security_ops = &dummy_security_ops;
return 0;
}
/**
* mod_reg_security - allows security modules to be "stacked"
* @name: a pointer to a string with the name of the security_options to be registered
@ -147,30 +121,6 @@ int mod_reg_security(const char *name, struct security_operations *ops)
return security_ops->register_security(name, ops);
}
/**
* mod_unreg_security - allows a security module registered with mod_reg_security() to be unloaded
* @name: a pointer to a string with the name of the security_options to be removed
* @ops: a pointer to the struct security_options that is to be removed
*
* This function allows security modules that have been successfully registered
* with a call to mod_reg_security() to be unloaded from the system.
* This calls the currently loaded security module's unregister_security() call
* with the @name and @ops variables.
*
* The return value depends on the currently loaded security module, with 0 as
* success.
*/
int mod_unreg_security(const char *name, struct security_operations *ops)
{
if (ops == security_ops) {
printk(KERN_INFO "%s invalid attempt to unregister "
" primary security ops.\n", __FUNCTION__);
return -EINVAL;
}
return security_ops->unregister_security(name, ops);
}
/* Security operations */
int security_ptrace(struct task_struct *parent, struct task_struct *child)
@ -528,11 +478,6 @@ int security_inode_killpriv(struct dentry *dentry)
return security_ops->inode_killpriv(dentry);
}
const char *security_inode_xattr_getsuffix(void)
{
return security_ops->inode_xattr_getsuffix();
}
int security_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err)
{
if (unlikely(IS_PRIVATE(inode)))
@ -858,7 +803,6 @@ int security_netlink_send(struct sock *sk, struct sk_buff *skb)
{
return security_ops->netlink_send(sk, skb);
}
EXPORT_SYMBOL(security_netlink_send);
int security_netlink_recv(struct sk_buff *skb, int cap)
{

20
security/selinux/hooks.c
View file

@ -2409,11 +2409,6 @@ static int selinux_inode_removexattr (struct dentry *dentry, char *name)
return -EACCES;
}
static const char *selinux_inode_xattr_getsuffix(void)
{
return XATTR_SELINUX_SUFFIX;
}
/*
* Copy the in-core inode security context value to the user. If the
* getxattr() prior to this succeeded, check to see if we need to
@ -4554,19 +4549,6 @@ static int selinux_register_security (const char *name, struct security_operatio
return 0;
}
static int selinux_unregister_security (const char *name, struct security_operations *ops)
{
if (ops != secondary_ops) {
printk(KERN_ERR "%s: trying to unregister a security module "
"that is not registered.\n", __FUNCTION__);
return -EINVAL;
}
secondary_ops = original_ops;
return 0;
}
static void selinux_d_instantiate (struct dentry *dentry, struct inode *inode)
{
if (inode)
@ -4844,7 +4826,6 @@ static struct security_operations selinux_ops = {
.inode_getxattr = selinux_inode_getxattr,
.inode_listxattr = selinux_inode_listxattr,
.inode_removexattr = selinux_inode_removexattr,
.inode_xattr_getsuffix = selinux_inode_xattr_getsuffix,
.inode_getsecurity = selinux_inode_getsecurity,
.inode_setsecurity = selinux_inode_setsecurity,
.inode_listsecurity = selinux_inode_listsecurity,
@ -4914,7 +4895,6 @@ static struct security_operations selinux_ops = {
.sem_semop = selinux_sem_semop,
.register_security = selinux_register_security,
.unregister_security = selinux_unregister_security,
.d_instantiate = selinux_d_instantiate,